N. K. B.  Robson, ?Studies in the genus Hypericum L. (Hypericaceae) 9. Addenda, corrigenda, keys, lists and general discussion?, Phytotaxa, vol. 72, 2012.

N. K. B.  Robson, ?Studies in the genus Hypericum L (Hypericaceae) 5(2). Sections 17. Hirtella to 19. Coridium.?, Phytotaxa, vol. 4, 2010.

N. K. B.  Robson, ?Studies in the genus Hypericum L. (Hypericaceae) 5(1). Sections 10. Olympia to 15/16. Crossophyllum.?, Phytotaxa, vol. 4, 2010.

N. K. B.  Robson, ?British and Irish St John's worts: 2.?, Wild Flower Mag., vol. no.399, pp. 18-22 (1984) - illus., chrom. nos., 1984.

N. K. B.  Robson, ?British and Irish St. John's worts: 3.?, Wild Flower Mag., vol. no.400, pp. 13-16 (1984) - illus., chrom. nos., 1984.

J. M.  Gillett and Robson, N. K. B., The St. John's-wort of Canada (Guttiferae). Ottawa: National Museums of Canada, 1981, p. iv, 40p.- illus., maps, chrom. nos., keys.

N. K. B.  Robson, ?British and Irish St. John's worts: 1. Introduction and shrubby species.?, Wild Flower Mag., vol. no. 398, pp. 22-25 (1983)- illus., 1983.

D. J. B.  Killick and Robson, N. K. B., ?Clusiaceae (nom. alt. Guttiferae).?, in Flora of Southern Africa: vol., , Ed. 22: , 1976, pp. 14 - 23 (1976) -   Illus., keys.

N. K. B.  Robson, ?Flora of Panama: 6. Family 123A. Hypericaceae.?, Ann. Missouri Bot. Gard., vol. 65, pp. 9 - 26 (1978) -   Illus., keys., 1978.

N. K. B.  Robson, Flora of West Pakistan: no. 32. Guttiferae. 1973, p. 12p.

N. K. B.  Robson, ?Studies in the genus Hypericum L. (Guttiferae): 7. Section 29. Brathys (part 1).?, Bull. Brit. Mus. (Nat. Hist.) Bot., vol. 16, p. 106p. (1987) - illus., maps., 1987.

N. K. B.  Robson, ?An Iranian floristic link with Socotra in Hypericum (Hypericaceae).?, Pl. Syst. Evol., vol. 155, pp. 89-92 (1987) -, 1987.

N. K. B.  Robson, ?(971) Proposal to conserve the name Hypericum japonicum Thunb. ex Murray against H. chinense Osbeck (Guttiferae).?, Taxon, vol. 39, pp. 134-135 (1990) -, 1990.

N. K. B.  Robson, ?(972) Proposal to reject the name Hypericum quadrangulum L. (Guttiferae).?, Taxon, vol. 1, pp. 135-137 (1990) -, 1990.

N. K. B.  Robson, ?Studies in the genus Hypericum L. (Guttiferae): 8. Sections 29. Brathys (part 2) and 30. Trigynobrathys.?, Bull. Brit. Mus. (Nat. Hist.) Bot., vol. 20, pp. 1-151 (1990) - illus., maps., 1990.

N. K. B.  Robson, ?Parallel evolution in tropical montane Hypericum.?, Op. Bot., vol. no.121, pp. 263-274 (1993) - illus., col.illus., 1993.

N. K. B.  Robson, ?Studies in Hypericum: validation of new names.?, Bull. Nat. Hist. Mus. (London), Bot., vol. 23, pp. 67-70 (1993) -, 1993.

N. K. B.  Robson, ?Hypericum uralum.?, New Plantsman, vol. 2, pp. 242-245 (1995) - col. illus., 1995.

N. K. B.  Robson, ?Plant portraits: 337. Hypericum subsessile. Clusiaceae (Guttiferae).?, Curtis's Bot. Mag., vol. 15, pp. 92-95 (1998) - illus., col. illus., 1998.

N. K. B.  Robson, ?Studies in the genus Hypericum L. (Guttiferae) 4(1). Section 7. Roscyna to 9. Hypericum sensu lato (part 1).?, Bull. Nat. Hist. Mus. (London), Bot., vol. 31, pp. 37-88 (2001) - illus., 2001.

N. K. B.  Robson, ?Studies in the genus Hypericum L. (Guttiferae) 4(2). Section 9. Hypericum sensu lato (part 2): subsection 1. Hypericum series 1. Hypericum.?, Bull. Nat. Hist. Mus. (London), Bot., vol. 32, pp. 61-123 (2002) - illus., 2002.

D.  Ciccarelli, Garbari, F., and Robson, N. K. B., ?Hypericum perforatum L. (Clusiaceae) in Italy: some taxonomic remarks.?, Atti Soc. Tosc. Sci. nat. Mem., B, vol. 109, pp. 1-4 (2002 publ. 2003) - illus., 2003.

N. K. B.  Robson, ?(1573) Proposal to conserve the name Hypericum xdesetangsii Lamotte (Clusiaceae) with a conserved type.?, Taxon, vol. 52, pp. 139-140 (2003) -, 2003.

N. K. B.  Robson, ?Hypericum botany.?, in Hypericum: the genus Hypericum., E.  Ernst, Ed. London: Taylor and Francis, 2003, pp. pp.1-22 - illus.

N. K. B.  Robson, ?Hypericum sect. Ascyreia (Clusiaceae): new species and subspecies from China.?, Acta Phytotax. Sin., vol. 43, pp. 271-277, 2005.

N. K. B.  Robson, ?Studies in the genus Hypericum L. (Clusiaceae). Section 9. Hypericum sensu lato (part3): subsection 1. Hypericum series 2. Senanensia, subsection2. Erecta and section 9b. Graveolentia.?, Syst. Biodivers., vol. 4, pp. 19-98, 2006.

N. K. B.  Robson, ?Studies in the genus Hypericum L. (Guttiferae) 6. Sections 20. Myriandra to 28. Elodes?, Bull. Nat. Hist. Mus. (London), Bot., vol. 26, pp. 75-271, 1996.

N. K. B.  Robson and Davis, P. H., ?A new Turkish species of Hypericum sect. Arthrophyllum.?, Notes Roy. Bot. Gard. Edinburgh, vol. 38, pp. 103 - 104 (1980)   Key., 1980.

N. K. B.  Robson, ?A new species of Hypericum from Angola.?, Bol. Soc. Brot., ser. 2, vol. 53, pp. 113 - 121 (1979 - 80 publ. 1980) - illus., map, key., 1980.

N. K. B.  Robson, ?Hypericum olympicum: wild and cultivated.?, Plantsman, vol. 1, pp. 193 - 200 (1980) - col. illus., map, chrom. no., key., 1980.

N. K. B.  Robson, ?Studies in the genus Hypericum L.  (Guttiferae).  2.  Characters of the genus.?, Bull. Brit. Mus. (Nat. Hist.), Bot., vol. 8, pp. 55-226, 1981.

N. K. B.  Robson, ?Hypericum specimens collected by Roy Lancaster in south-western China, October 1980.?, Int. Dendrol. Soc. Year Book, p. 141 (1980 publ. 1981) -, 1981.

N. K. B.  Robson, ?Studies in the genus Hypericum L. (Guttiferae): 2. Characters of the genus.?, Bull. Brit. Mus. (Nat. Hist.) Bot., vol. 8, pp. 55 - 226 (1981) - illus., chrom. nos., maps., 1981.

N. K. B.  Robson and Long, D. G., ?Notes relating to the Flora of Bhutan: 7. Notes on  Hypericum L.?, Notes Roy. Bot. Gard. Edinburgh, vol. 41, pp. 133-139 (1983)- illus., map., 1983.

N. K. B.  Robson, ?British and Irish St. John's Worts: 4. Hypericum linariifolium and H. humifusum.?, Wild Flower Mag., vol. no.401, pp. 22-25 (1984) - illus., 1984.

N. K. B.  Robson, Studies in the genus Hypericum L. (Guttiferae): 3. Sections: 1. Campylosporus to: 6a. Umbraculoides., vol. 12. Bull. Brit. Mus. (Nat. Hist.) Bot., 1985, p. 325p. (1985) - illus., maps, chrom. nos., keys.

N. K. B.  Robson, ?A review of Hypericum sect. Hirtella.?, Notes Roy. Bot. Gard. Edinburgh, vol. 43, pp. 255-265 (1986) - chrom. nos., key., 1986.

N. K. B.  Robson, ?Evolutionary recall in Hypericum (Guttiferae) .?, Trans. bot. Soc. Edinb., vol. 41, pp. 365-83, 1972.

N. K. B.  Robson, ?Hypericum x destangsii.?, Watsonia, vol. 9, p. 203 (1972), 1972.

N. K. B.  Robson, ?Identification lists of Malaysian specimens: 46. Hypericum.?, Leyden, Foundation Flora Malesiana, 1972., pp. pp. 801-811, 1972.

N. K. B.  Robson, ?Hypericum.?, in Plants: wild and cultivated:, , Ed. 1973, pp. 79-82 (1973).

N. K. B.  Robson, ?Hypericum sect. Brathys in Africa and Madagascar.?, Garcia de Orta, Ser. Bot., vol. 1, pp. 83-90 (1973), 1973.

N. K. B.  Robson, ?Notes on Malesian species of Hypericum (Guttiferae) Florae Malesianae Praecursores: 52.?, Blumea, vol. 20, pp. 251-274 (1972 publ. 1973), 1973.

N. K. B.  Robson, ?Notes on some Nepalese and Indian Hypericum.?, J. Jap. Bot., vol. 52, pp. 276 - 288 (1977) -   maps, keys., 1977.

N. K. B.  Robson, ?Studies in the genus Hypericum L. (Guttiferae): 1. Infrageneric classification.?, Bull. Brit. Mus. (Nat. Hist.), Bot., vol. 5, pp. 291 - 355 (1977) -   Maps., 1977.

N. K. B.  Robson, ?Parallel evolution in African and Mascarene Hypericum.?, Kew Bull., vol. 33, pp. 571 - 584 (1979) -   Illus., maps, key., 1979.